When a number is added to an array containing strings, the result is a string rather than a number

Question

When a number is added to an array containing strings, the result is a string rather than a number

Currently, I am attempting to change my array key value from a string to a number within my JSON object:

form["price"] == "23"
console.log(typeof form["price"]) // string
form["price"] == Number(parseFloat(this.formObject[field.fieldName]))

The issue arises after this conversion, resulting in different types :

console.log(Number(parseFloat(this.formObject[field.fieldName]))) // number
console.log(form["price"]) // string, should be number

How can the key type be modified? This difficulty is affecting the backend validation of my DTO.

javascript json

Answer 1

Answer №1

In order to set a value equal to another, use = instead of comparing with ==

const data = {};

data["quantity"] = "10";
console.log(typeof data["quantity"]); // string

data["quantity"] = Number(parseFloat("10")); // Number(parseFloat(this.dataObject[field.fieldName]));
console.log(typeof data["quantity"]); // number

Answer 2

In order to set a value equal to another, use = instead of comparing with ==

const data = {};

data["quantity"] = "10";
console.log(typeof data["quantity"]); // string

data["quantity"] = Number(parseFloat("10")); // Number(parseFloat(this.dataObject[field.fieldName]));
console.log(typeof data["quantity"]); // number

When a number is added to an array containing strings, the result is a string rather than a number

Answer №1

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